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Motor vehicle drive system for a motor vehicle having an electric motor system, and a method of operating said drive system

  • US 5,418,437 A
  • Filed: 11/16/1992
  • Issued: 05/23/1995
  • Est. Priority Date: 11/16/1992
  • Status: Expired due to Fees
First Claim
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1. A motor vehicle drive system for a motor vehicle having an electric motor system, an actuating system, an accelerator system, a mode selector, a battery and four wheels, comprising:

  • four independently driven electric motor wheels which constitute respectively said four wheels of said vehicle;

    a power supply bus having an output for supplying power to said electric motor system, said power supply bus being a DC power supply bus;

    a battery connector for connection to said battery, said connector having a power output for supplying said power supply bus;

    a controller system supplying at least one output, having inputs respectively for connection to said battery, said actuating system, said accelerator system, said mode selector and said electric motor system so that said controller system can monitor a status thereof, said controller system also having inputs connected respectively to said motor wheels for monitoring an operation thereof, whereby each of said motor wheels can be individually controlled by said controller system;

    a power converter system having a first input connected to said power bus, a second input connected to said at least one output of said controller system, operation of said power converter system being controlled by said controller system, said power converter system having an output connected to said motor system for supplying power to said motor system, said power converter system also comprising four power inverters associated respectively with a corresponding one of said four motor wheels, wherein each of said power inverters has a first input connected to said power supply bus, a second input connected to said controller system, and an output connected to the corresponding one of said motor wheels;

    a combustion motor electric power supply having an input connected to said at least one output of said controller system, operation of said power supply being controlled by said controller system, said combustion motor electric power supply having an output for producing current; and

    a first power converter having an input connected to said output of said power supply, and said power converter having an output for supplying power to said power supply bus, said controller system being connected to said power converter so that said power converter is monitored and controlled by said controller system, whereby said controller system monitors and controls operation of said electric motor system and, when an auxiliary electric power is needed on said power supply bus, said controller system activates operation of said combustion power supply.

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